OPERATION MACHINE OPERATIONS AND CONTROLS ELECTRONIC CONTROL SYSTEM HANDLING 0. Never remove, install, or disassemble and repair any sensor. This will cause mistaken actuation of the inter- ference prevention device. Always contact your Komatsu distributor for repairs. If any sensor is hit or any external damage is found, check the actuation condition of the automatic stop. If any abnormality is found, please contact your Komatsu distributor. Never do any work in which the sensors go below water. If any sensor should be immersed in water, check the actuation condition of the automatic stop.
When washing the machine, do not spray water directly onto the electrical parts or the wiring connec- tors. The auto-stop cancel switch must only be used for moving the machine to a safe place when there is an abnormality in the electronic control system. It must not be used for any other reason. When changing to the long arm, multi-changer arm or A lock specified by Komatsu, ask your Komatsu distributor to change the attachment. If the attachment is changed from the standard work equipment, the electronic control system will not work normally. If the work equipment is replaced by an attachment made by another company, please consult your Komatsu distributor first.
NOTICE If an abnormality occurs in the electronic control sys- tem, the controller will carry out self diagnosis. Electri- cal system monitor (1) on the monitor panel will flash, the buzzer will sound, and the error code will be dis- played on the depth display (2). For details of the correct action to carry out, see "Machine Monitoring System ( 3-105 )". Depending on the location of the failure of the elec- tronic control system the controller may not carry out self diagnosis, and it may become impossible to oper- ate the work equipment. If this happens, move the machine to a safe place, and contact your Komatsu dis- tributor for inspection.
Before using the electronic control system, always carry out the checks before starting and after start- ing. In cold areas, carry out thorough warming up before using the machine. If the hydraulic oil temperature is low, the automatic stop may be out of position. The electronic control system is an automatic control system for the work equipment and a device to prevent inter- ference between the bucket and cab, or canopy. To ensure that this device works properly, always keep to the following points. 3-73 WARNING